matt yussman was in a panic. improvised device duct-taped to his waist was set to go off at 11:00 am, just minutes away. >> i start asking, like, "where's the bomb squad? it's getting closer to 11:00. this thing is supposed to go off. >> reporter: the bomb squad was now on the scene. >> that was the first and only time i responded to an incident with an indivudal that had a device actually attached to their body. >> reporter: connecticut state police trooper mike avery now retired, was on the bomb squad. avery's team assembled a bomb robot, thinking they could use it to inspect the device and maybe defuse it from a safe distance. the bomb squad didn't know what it had walked into. >> we didn't know if this individual was a suspect or a victim. >> reporter: unbeknownst to matt, four police sniper teams were getting into position around his car targeting him. >> he has an explosive device on him and if he doesn't follow our instructions, and in the event if he rushed outta that perimeter towards us or towards other